Android system consumes 60% energy. What to do with it?

Question

Android

Good day.
What to do if the android system consumes more than 60% of the battery? Lenovo k5. Phone year.
According to statistics in percentage in the settings / battery it says:
Android system - 60 percent.
Screen - 52.
Chrome - 34.
Instagram - 30.
Android OS - 26.
System graphical interface - 8.
Google - 7.
Media server - 5.
Google services - 4.
And Googleboard - 4. Discharges
quickly.
I do not run more than 1 application. Geolocation is disabled.

Answer 1

This percentage is not relative to the full battery, but relative to the consumed volume.
And yes, you have a crooked firmware.

Answer 2

Understand BetterBatteryStats and find the reason for the expense.